Orchard-heater.



J. L. HAMILTON. ORCHARD HEATER.

APPLICATION FILED APR. 19, 1913.

Patented Feb. 2

INVENTOR- ATTORNEY WITNESSES! ykjfiu JAMES L. HAMILTON, 0F GRANDJUNCTION, COLORADO,

Specification of Letters Patent.

Patented Feb. 24, 1914.

lpplication filed April 19, 1913. Seri'al No. 762,294.

To all whom it may concern:

Be it known that I, JAMES L. HAMILTON,

a citizen of the United States of America, and resident of GrandJunction, county of Mesa, and State of Colorado, have invented certainnew, and useful Improvements in Orchard-Heaters, of which the followingis a specification.

This invention relates broadly to heating apparatus, and specifically toa novel and improved construction of orchard heater.

The primary object of the invention is to provide an orchard heater ofthe oil-burning type which is pecially designed for burning licl uidfuel or oils of low grade, as asphaltum 01 s.

- In burning low grade liquid fuels, as asphaltum oils, in vesselswherein the flame is permitted to play over the entire surface, thericher, or more volatile, portion, which is uppermost in the vessel,burns first; thus the grade of the fuel becomes poorer as the bottomof'the vessel is approached, resulting incombustion or vaporization ofthe fuel becoming slower and the heat generated gradually growing less.

It is therefore an object of this invention to provide an orchard heaterwherein the flame is permitted to play over a relatively small partonlyof the surface of the oil in the container, or vessel, and wherein theoil is permitted to feed to the combustion point from the bottom of saidcontainer, resulting in the grade of the fuel supplied to the burningpoint being maintained substantially uniform until all is consumed.

A further object of the invention is to provide a heater of thecharacter fmentioned in which a blast of air is directed upon thesurface of the burning oil, resulting in said oil burning with a blowtorch efi'ect.

With these and other objects in view, the invention resides in theconstruction, arrangement and combinations of parts herein afterdescribed and/illustrated in the accompanying drawings, in which Figure1 is a top plan view of the invention; Fig. 2 is a longitudinal sectionof the same,-taken on' the line 2-2, Fig. 1; Figs. 3 and 4; aretransverse sections taken, respectively, on the lines 3-3 and M, Fig. 1;Fig. 5 is a section on the line 5-5, Fig.2, showing a modified form ofguides for the damper; Fig. 6 is a section somewhat similar to Fig. 2,showing a plurality of draft container.

tubes; and Fig. 7 is a view somewhat similar to Fig. 4, illustratingamodification.

I Referrin to said drawings, in which like reference 0 aractersdistinguish like parts throughout the several views--1 indicates an 011receptacle, or container, which is herein shown as being rectangular inshape, but which may be of any other suitable form. Removably mountedupon the to of said container is a shield 2 of downwar ly dished, orpan-like, form having laterally directed terminal flanges 3 which restupon and project laterally beyond the top edges of the Extendingdownward through an-opening provided therefor in the bottom of saidshield or pan 2 adjacent to one end of the latter is a sheet metal.fire-box 4:, open at both ends, which has a peripheral out: wardlydirected flange 5 at its upper end mounted upon the bottom of said panabout the opening in the latter, whereby said firebox is suspended fromsaid pan with its lower end elevated slightly above the bottom of thecontain r.

.Resting upon the flanges 3 of the pan is a lid or covert, herein shownas flat, which has its lateral longitudinal edges turned under, as shownat 7, to constitute guideways in which the longitudinally extendingflanges 3 of the pan are received, said cover thus being adapted forsliding longitudinally with respect to said pan in effecting themounting and removal thereof. Provided in said cover over the positionoccupied by the fire-box 4 is one ormore draft-o enings 8 designed toadmit air to said fireox for facilitating combustion of fuel containedin the latter. The volume of air permitted to enter the fire-box iscontrolled by a regulating damper 9 which is slidably mounted in aposition permitting of closing off of one or all of said openings. Asshown, said damper is slidable between a pair of oppositely disposedguide-flanges 10 mounted on opposite sides of said draft opening, orwhich may be formed by striking u strips of metal from said cover in a\vel -understood manner, as shown at 1O in Fi 5. A collar 11 is formedon said cover 6 a out an opening provided in the latterat the endopposite that which overlies the fire-box, and mounted about said collaris a tubular plpe or stack 12 through which the products of combustionfrom the fi e-box are discharged,

said products being directed thereto through 110 the space afiordedbetween the cover 6 and the bottom of the pan, as indicated by ar rowsin Fig. 2. I

As fuel is consumed in the fire-box, oil 1s fed thereto from thecontainer, the oil level in said fire-box and container being obviouslymaintained equal. And,since the oil supply to the fire-box must enterthrough the lower end thereof, which closely approaches the bottom ofthe container, it will be understood that the entrance of the lighter,most volatile portion, which lies on the surface, prior to the heavierbottom 011 is prevented, and that, as a consequence, the quality of theoil supplied to the fire-box will be maintained substantially uniformuntil all has been consumed.

For facilitating combustion when the fuel has burned down somewhat, thatis, when the fuel lowers to a point where the drafts of air enteringthrough the draft-openmgs 8 do not strike forcibly upon the surface ofthe fuela draft tube is provided, the same being suspended from andopening through the cover 6, whereby air is conductedclose to thesurface of the oil. When the 011 has burned down, uncovering the lowerend of such draft-tube, the air rushes through said tube in'the form ofa blast, producing upon the surface of the oil a flame which resemblesor closely approaches that of a blowtorch. The fuel in the fire-pot isthus vaporized and burned rapidly, producing a high degree of heat inwhich the carbon and other-smoke and smut producing elements is largelyconsumed, but little smoke and smut being permitted to issue from thestack.

It will be obvious that a plurality of draft tubes as 13 and 13 andhaving different 6 lengths may be projected into the fire-pot as V shownin Fig. 6 so that they may be successively uncovered as the fuel islowered.

While'it is not the purpose of the device to heat and vaporize the fuelcontained in the receptacle or container outside the firepot, some gasis of course generated within said. container. To permit this gas toescape. an opening 14: is provided in the bottom of the pan, preferablyat a point directly in line with the center line of the stack.

While the cover 6 is shown to be flat in Figs. 1, 2, 3, 4 and 6, thesame may, 'if desired, be made in the same form as the pan 2that is,dished as shown at 6 in Fig. 7-

. 5 in which case it will be disposed in a reversed position whenmounted in place, thus increasing the capacity of the passageway for theproducts of combustion from the fire-pot to the stack, as is clearlyillustrated in said Fig. 7.

Having thus described my invention, what- I claim as new, and desiretosecure by Letters Patent, is-- 1. An orchard heater comprising an oilas container, a downwardly dished shield mounted over said container, afire-pot projected through and depending from said shield adjacent tooneend thereof, a cover mounted over said shield and supported at adistance from the bottom of the latter, said cover having closabledraft-openings therein over the position occupied by said fire-pot, anda stack mounted on said cover at a point remote from saiddraft-openings.

2. An orchard heater comprising an oil container, a downwardly dishedshield mounted over said container, a fire-potprojected through anddepending from said shield adjacent to one end thereof, a cover mountedover said shield and supported at a distance from the bottom of thelatter, said cover having closable draft-openings therein over theposition occupied by said fire-pot, a tube depending within saidfire-pot from said cover, and a stack mounted over said 35 cover at theend opposite that which overlies the fire-pot.

3. An orchard heater comprising an oil container,= a. downwardly dishedshield mounted over said container, a fire-pot projected through anddepending from said .shield adjacent to one end thereof, a cover mountedover said shield and supportedat a distance from the bottom of thelatter, damper-controlled draft openings in said cover over thefire-pot, means for directing v blasts of air directly upon the surfaceof the oil in the fire-pot, and a stack located on said cover at theoppositeend of the latter. 4. An orchard heater comprising an oilcontainer, a downwardly, dished shield mounted over said container, afire-pot projected through and depending from said shield adjacent toone, end thereof, a cover mounted over said shield and supported at adistance from the bottom of the latter whereby a passagewayis affordedbetween them forthe products of combustion from the fire-pot,damper-controlled draft-openings in said cover over the fire-pot, and a-,stack mounted upon the end of the cover opposite that which overliesthe fire-pot and having communication with said passageway.

5. An orchard heater comprising an oil container, a downwardly dishedshield mounted over said container, 3. fire-pot projected through anddepending fromsaid shield adjacent to one end thereof, a cover mountedover said shield and supported at a distance from the bottom of thelatter whereby a passageway is afforded between them for the products ofcombustion from the fire-pot, damper-controlled draft-openings in saidcover over the fire-pot, a tube for conducting air directly to thesurface of the oil in the fire-pot, and a stack communieating with saidpassageway to permit products of combustion to issue therefrom.

6. An orchard heater comprising an oil container, a downwardly dishedshield to the fire-pot, and a stack mounted on said 10 "mounted oversaid container, said shield havcover at a point remote from thefire-pot.

ing laterally projecting flanges along its In testimony whereof, I alfixmy signalongitudinaledges, a fire-pot projecting ture in presence of twosubscribing witnesses. through and depending from said shield, a

cover mounted over sald shield and having JAMES HAMILTON turned-underlongitudinally extending edges Witnesses:

1 able relation to the shield H. E. DUNLAP,

in embracin sl' flanges, reglfiatable means for admitting air L. D.Momus.

